/Engine/Source/Editor/AnimationBlueprintLibrary/Public/AnimPose.h
Retrieves the relative transform between the two provided bone names
Relative transform in requested space for bone if found, otherwise return identity transform
static FTransform GetRelativeTransform ( const [FAnimPose](API\Editor\AnimationBlueprintLibrary\FAnimPose) & Pose, [FName](API\Runtime\Core\UObject\FName) FromBoneName, [FName](API\Runtime\Core\UObject\FName) ToBoneName, EAnimPoseSpaces Space )